diff --git a/pyrogram/client/client.py b/pyrogram/client/client.py
index fc749033df..0773504167 100644
--- a/pyrogram/client/client.py
+++ b/pyrogram/client/client.py
@@ -236,6 +236,8 @@ def __init__(
         self.plugins = plugins
         self.no_updates = no_updates
         self.takeout = takeout
+        self.load_session_hook = None
+        self.save_session_hook = None
 
         self.dispatcher = Dispatcher(self, workers)
 
@@ -288,14 +290,18 @@ async def start(self):
                         'More info: https://docs.pyrogram.ml/start/Setup#bot-authorization\n')
 
         self.load_config()
-        await self.load_session()
+        if callable(self.load_session_hook):
+            self.load_session_hook(self)
+        else:
+            self.load_session()
         self.load_plugins()
 
         self.session = Session(
-            self,
-            self.dc_id,
-            self.auth_key
-        )
+                self,
+                self.dc_id,
+                self.auth_key,
+                self.api_id.encode('utf-8')
+            )
 
         await self.session.start()
         self.is_started = True
@@ -309,7 +315,10 @@ async def start(self):
                     self.is_bot = True
                     await self.authorize_bot()
 
-                self.save_session()
+                if callable(self.save_session_hook):
+                    self.save_session_hook(self)
+                else:
+                    self.save_session()
 
             if not self.is_bot:
                 if self.takeout: